Excavator.



' P TENTBD JULY 31,1656? 2 gums-supra.

IIIIII D r m l/2mm? W; R. MARTIN.

EXGAVATOR. APPLIOATION PILED NOV. 29.1905.

.WITNESSES: i

. PATENTED JULY 31,1906.

W. R. MARTIN.

EXGAVATOR. APPLICATION FILED Roi 29,1905.

a sums-51mm 3.

I YS

UN'HED. STATES WILLIAM RILEY/ Specification of Letters Patent.

PATENT OFFICE. i

MARTIN,,.OF;IDAHO FALLS, IDAHO.

EXCAVATOFL Patented .l'uly 31, 1906.

Application filed November 29, 1905. Serial'No, 289,628.

T0 'all whom zit-may concern:

' Be it known that I,.WILLIAM RILEY MAR- a citizen of the United States, residing at: Idaho Falls, in the county of Bingham and State of Idaho, have invented a new and useful Excavator,

of which the, following is a specification.

' This invention relates. to excavator s for digging or excavating ditches, trenches, and

the like; and it has particularreference to an excavator of this class "which is mounted upon carrying-wheels and which is provided w th an adjustable frame carrying a dig er and an endless conveyer'or, elevator where y the dirt loosened by the digger is'conveyed into a receptacle which is also supported upon the carrying-wheels and which forms a part of the comp ete structure. 'In' GXGIIVGF.

tors of this class as-heretofore constructed theexcavated material which is elevated by the-endless conveyor isdumped by the latter into a receptacle Where it accumulates until it overflows the top edges, unless it is shifted from theposition in which it is deposited by the elevator or endless 'conveyer. The principal object of the present invention is to prevent the accumulation of the excavated material in one particular location of plify andimprove the construction and operation of this class of devices.

the receptacle and to dispense with the necessit of s 'fting it manua 1y.

urther ob ects of the invention are tosim- 'With,these and other ends in view, will readily appear as the nature of the inventioni s better understood, the same consists in the improved construction and novel arrangementand combination of arts, which willbe hereinafter fully describe and particularly -ointed out in the claims.

In t e accompanying drawings has been illustratedaisi'mple and,preferred form of the invention, it being, however, understood that no limitation is necessarilyimade to the precise'structural details therein exhibited, but

1 that changes,- alterations, and modifications within the scope-of the invention may be made when desired.

*In the drawings, Figure 1 is a top plan view of an excavating-machine constructed inaccordance with the principles of the invention. Fig. 2 is, a longitudinal vertical sec- "tional view of the same. 1 Fig. 3 is aside 'levation, partly in section, of a portion of the machine, illustrating the automatic trip vid'ed with hearing? end of the frame 21, which latte respectively. Upon the shafts 23,

Corresponding parts in the several figures I are indicated throughout by similar characters of reference.

In'the construction of the improved exca-' 6o vatlngj-machine there is provided a suitably? constructed frame 1, supported upon front and rear axles 2 3 5.

-'box or receptacle B. A plurality of rollers,

as 16 are rovided to'support the upper lead or flight 0f the endless carrier vent the latter from sagging under the weight imposed thereon. p

Upon the upper edges of the side members 6 6 of the boxare secured brackets 17, afl'ording bearings for a'shaft 18, carrying a roller 85 19. Upon the shaft 18 there are pivoted bars 20, the free ends of which are connected pivotally' with the upper end of a frame 21. The side members 22 of the frame 1 are prowhich are pivoted ars 24, the free ends of which are pivotally connected with the lower i J's-preferably prov ded with shafts 25 and 26, constituting pivots for the free ends of the bars' there are mounted rollers 27, 2$, and 29, which serve, in conjunction with the roller 19 .upon the shaft 18, to support an endless conveyer 30, which may be of any suitable and 10 0 appropriate construction, but whichv prefer a 51 consists of an endless apron of textile or other flexible material which is provided at intervals with slats31, constituting buckets.

A digger-blade32 of suitable construction is 105 carried at thelower end of the frame 21, said dig er-blade bein extended upwardly over the ower edge of t e endless conveyer, so that material loosened by the said di ging-blade in the progress of the machine wifi ited upon the said endless conveyer to be elevated thereby, as will be readily understood.

having carrying-wheels 4 r The frame 1 supports a box or receptacle B, the weight of which is supported mainly 6 5,

The bottom of the box or 14 15, WlllC-h are supported v10, so as to prefor"a shaft 23, upon go 20 and 24, 5 25, and 26 be depos- 11o The shaft 18, which supports the upper end of the endless eonveyer, has been shown as provided with a pinion 3-3, meshing with a pinion 34 upon a short shaft 35, supported in suitable bearings upon one of the brackets 17. The shaft 35 also carries a s rocketwheel 36, which is connected by a lin z belt 37 'with a sprocket-wheel 38 upon one of the hind wheels 5 of the machine, from which motion in the proper direction will thus be transmitted to the endless conveyer.

Suitablyconnected with the frame 21 is a rack-bar 39, which is guided in engagement with a pinion 40 u on a shaft 41, carrying also a ratchet-whee 42. Upon the shaft 41 there is pivoted a lever 43, having a awl 44 engaging the ratchet-wheel, whici may thereby be turned to effect the adjustment of the frame 21, the latter being retained in adjusted(position bly pivote upon tic frame of the machine. Other mechanism than that just described may be utilized within the scope of the presend ess' conveyer or elevator 30, is disposed above the forward end of the box or rece tacle B, so that material discharged over the said elevat'oror conveyer will naturally drop in the front end of said box or receptacle, which latter is obviously made of suilicient capacity to contain as much material as may be conveniently transported in one load. The material delivered by tho end-1 less conveyer or elevator will naturall drop in the front part of the box or receptac e, and 1 to IYIOYB'Sltld material gradually iii a-rearward direction in said box or receptacle mechanism is employed as follows: Upon the front end 7 of the box or rece )tacle B near the upper edge and between t 1e side ieees 6 6 is hinged a trip-board 47, the free efige of which is normally forced in an upward direction by -a suitably-disposed spring 48, the tendency of said ,spring being to force the free edge of the trip-board into the path of material discharged over the endless conveyer 30 and dropping into the box or reecptaele B. The position of the trip-board remains practically unaffected until material :wculnulatcs in the box to suclran extent as to rise above the free edge of said trip-bmir l, after which additional material will accumulate above the trip-board and exert a downward pressure thereon sullicient to overcome the tension of the spring 48. 'lhe trip-board 47 is connected, by means of a link 49, with a crank 50, extending from a rock-shaft 51,

means of a check-pawl 45,

supported in suitable bearings uponthe frame of the machine and having near its outer end a crank 52. Connectedwith one of the llind wheels 5'is aspur-wheel 53, meshing with a spur-wheel 54 upon a'suitablysupported short shaft 55, which also carries a bevel-gear v56, meshing with a bevel-pinion 57 upon a shaft 58, sup orted in suitable bearings and carrying a s eeve 59, having a worm 60, meshiiig with a worm-gear 61 upon the shaft 15, carrying the roller 13, which supports the rear end of the endless conveyer 10, which constitutes the bottom of the box or receptacle B. The sleeve 59, which is .loose upon the shaft 58, carries a clutch member 61, adapted to be engaged by a clutch-collar 62, which slidably engages the shaft 58 and is connected for rotation with' the latter by means of a key or spline 63. The clutch-collar 62 is adjusted upon the shaft 58 by means of a shipping-lever 64, fullcrumed at 65 and connected pivotally with one end of a sliding rod 66, sup orted in a bearing 67, and the other end of w ich is connected with the crank 52 by means of a link or flexible connection 68. The sliding rod 66 has a collar 69, between which and the bearing 67 is interposed a spring 70, the tension of which is exerted to actuate the lever 64 to move the clutch-collar 62 into engaging position with the clutch member 61'.

It will be understood that the tension of the spring 48 is to be sulliciently'powerful not only to support the trip-board 47, but also to overcome the tension of the spring 70, so as to hold the clutch member 62 normally out of engagement with the clutch member 61. When by the accumulation of material in thebo'x or receptacle B the tri board 47 is depressed, the rock-shaft 51 W1 1 befioscililated in its bearings, thus releasing the strain upontthe link or connecting member 68 and permitting the spring 70 to expand, thus actuating the sliding bar 66 and the lever 64 to throw the clutch-collar 62 into engagement with the clutch member 61, thus locking the latter upon the shaft 58, which is being coustantly rotated by the intermediate gearing connecting it with one of the carrying-wheels 5. The worm 60 will now engage the wormgear 61, causing the-shaft 15 to rotate and the upper flightmfi the endless carrier 10 to be moved in a rearward direction, thus moving the pile of excavated material away from the trip-board 47. As soon as the latter is remember 68 and moving the sliding bar 66 against the tension of the spring 70, thereby actuating the lever 64 to unship the clutchcollar 62 from engagement with the clutch member 61, and thus causing the stoppage" of the endless conlveyer'll). T his operation until the receptacle with a lever 7 3, which is suplporte tents of the boxor rece tacle will be automaticallg repeated at intervals The rock-shaft 51 is provided with an arm or crank 71, which is connected b 'a link.72

in a position within convenient reac of the driver or operator, who by manipulating said lever 'may'oscillate the'rock-shaft at willfxBy means of this hand-lever it will be seen that the clutch mechanism 61 62 may be held 21 is elevated and supported in a raised posi ,tion by the means provided for the urpose, and the load'may thenbe conveye to the dumping-place, where it maybe discharged by first manipulating the lever 73 to throw the clutch members 6162 into engagement and then causing the machine to ass over the ground until the load has been 'scharged.

Having thus described the invention, what is claimed is- "1'. In anexcavating-machine, a 1oad-carrying receptacle havin an endless-conve er bottom and means inc uding a trip mem er operable by the load accumulating in thereendless conveyer. s

2. In an e'xcavating-machine,a load-carrying receptacle havin an endless-conve er bottom, and means in'c udin a trip mem er operable 'b the load accumu ating in the receptacle w ereby said conveyer-bottom will be automatically operated, at intervals.

3. In an excavating-machine, a load-car- 7 rying receptacle,'and means including a trip a member operable by the load accumulating in the receptacle for automatlcally shifting the" position of the load in said rece tacle.-

4. In an excavating-machine, a oad-car rying receptacle, "and automatic means inc udlng atrip member operable by the load accumulating in the receptacle for moving the contents of said receptacle, intermitthe receptacle".

5. In an. excavating-machine, a load-carrying receptacle, means for dischargingflmterial into the forwardend of said receptacle,

tently, in the direction of the discharge end of and means including a trip member operable 'by the load accumulating in the receptacle for intermittently and automatically movin the contents of the receptaclein a rearwar direction.'

6. In an excavating-machine, a load-carhas received its loads members, an

of the con ceptacle for intermittently actuating said my own I have hereto aflixed receptacle havingan endlessconveyer l5; bottom, means for driving -said c'arrier-botnormally non engaging clutch; means lncluding a trip .member operable by the load accumiilating inthe .recep'tacle for placing said-clutch members.

tom includin into engagement.

7-. In an excavating-machine, a load-can rying-receptacle having an endless-conveyer bottom, means for driving said co'nveyer-bo'tf tom including normallfy hon-engagin clutch.

means or placingsai clutch members 1n engaging position said means inmembers, an

eluding a trip memberoperableat intervals by the load accumulatingin the receptacle. v 8. In an excavating-machine, a load-can an endless-conveyer j bottom, means for driwng said conveyer-bottom including clutch members, and a springactuated member tendingto fIlOVB one of the rying receptacle having clutch-members into engagin 'position'with the other clutch member; an a spring-actuated tri member connected'with the s ringactuate clutch-operatic member an actuating the latter a ainst t 'e tension of its op- :eratmg-spring to old the clutch device normally in non-engaging position; said trip member being disposed within theload-carrying receptacle and operated at intervals by material accumulating in the latter.

9. In an excavating-malchine, a wheel-supported frame havin a load-receiving receptacle, means carrie -u on the frame for excavating material and or conveying the same into the rece tacle, an endless conveyer constituting the ottom of said receptacle, a supporting-shaft for said conveyer having a worm-gear, a suitably-supported shaft driven from one of the carryin -wheels of the machine, a. sleeve mounted loosely upon said shaft and having a worm meshing with the.

worm-gear. and a clutch member, a clutch member slidably engaging the shaft, a shiping-lever engaging the slidable clutch memer, a sliding rod connected with the shipping-lever, a spring actuating said rod and o crating the shipping-lever to throw the c utch memberinto engaging position, a rockshaft having oppositely-extendingcranks, a

link connecting one of said cranks. with the slidable spring-actuated rod, a spring-actuated trip-board, and a link connecting said trip-board with another crank of the rockshaft; said trip-board being dis osed within the load-carrying receptacle an adapted to be automatically actuated at intervals by material accumulating in said receptacle.

. In testimony that I claim the foregoing as my signature in the presence of two witnesses.

WILLIAM RILEY MARTIN. Witnesses: O. A. JOIIANNESEN,

I). A. HAR'LER'I. 

